Magnetic Resonance 4D Flow Reveals Unusual Hemodynamics Associated With Aneurysm Formation and a Possible Cause of Cryptogenic Stroke in a Patient With Aortic Dissection

Four-dimensional flow is a magnetic resonance technology that has undergone significant technical improvements in recent years. With increasingly rapid acquisition times and new postprocessing tools, it can provide a tool for demonstrating and visualizing cardiovascular flow phenomena, which may offer new insights into disease. We present an interesting clinical case in which 4-dimensional flow demonstrates potential etiologies for 2 interesting phenomena in the same patient: (1) development of an unusual aneurysm and (2) cryptogenic stroke.